abb ag - epds s-limiter the worldʼs fastest limiting and ... · the world’s fastest limiting and...

ABB AG - EPDS

IS-limiter™

The worldʼs fastest limiting and switching device

The world’s fastest limiting and switching device

Customers

Function: Insert-holder with insert

Comparison: IS-limiter – Circuit-breaker

Breaking of a short-circuit current with IS-limiter

Detection of short-circuit currents

Reliability: IS-limiter as protection device at highest level

Applications

Technical data

Unbeatable advantages

Summary

Slide 2

Agenda


IS-limiter™

Slide 3

ABB’s solution for complex application engineered according to customer’s project specification

– Solves short-circuit current problems in electrical networks before peak short-circuit current is reached

– Reliability and function proofed in thousands of installations

– Experiences since 1958 with more than 3,000 Is-limiters in service in 80 countries


IS-limiter™

Slide 4


IS-limiter™

Slide 5

Industry

– Paper mills

– Refineries

– Chemical industries

– Car industries

– Power stations

– Steel-, Aluminum mills

– On- / Offshore platforms

– Ships / Vessels

– Data center

Town’s utilities

Utilities

Test-laboratories

Customers

Function: Insert-holder with insert

Slide 6

IS-limiter™

Comparison: IS-limiter – Circuit-breaker

Slide 7

IS-limiter™

T0: Response time of protection relay: 10 - 20 ms

T1: Operating time of protection relay: 30 - 40 ms

T2: Operating time of circuit-breaker: 40 - 80 ms

T3: Arc duration: 10 - 20 ms

90 - 160 ms

t

i

T2T0 T1 T3


Slide 8

IS-limiter™

T0: Response time of protection relay: 10 - 20 ms

T1: Operating time of protection relay: 30 - 40 ms

T2: Operating time of circuit-breaker: 40 - 80 ms

T3: Arc duration: 10 - 20 ms

90 - 160 ms

Current flow time by use of

Is-limiter: T = 5 - 10 ms

t

i

T2T0 T1 T3

T


Slide 9

IS-limiter™

125 kA

Current curve at the short-circuit location

250 kA

i1

u

t

i

50 kA x χ x 2

𝐈𝐤 𝐩𝐞𝐫𝐦." = 50 kA

𝐈𝐤" = 50 kA

6 kV / 5 kA

50 kA x χ x 2


Slide 10

IS-limiter™



𝐈𝐤" = 50 kA𝐈𝐤

" = 50 kA

125 kA

250 kA

i1

u

t

i i = i1 + i2

withoutIS-limiter


50 kA x χ x 2


Slide 11

IS-limiter™




" = 50 kA

125 kA

250 kA

i1

u

t

i i = i1 + i2

withoutIS-limiter



Slide 12

IS-limiter™




" = 50 kA

50 kA x χ x 2

125 kA

250 kA

i1

u

t

i i = i1 + i2

withoutIS-limiter

i2

i = i1 + i2

withIS-limiter



Slide 13

IS-limiter™

i

t

1

1 Short-circuit currentwithout Is-limiter


Slide 14

IS-limiter™

i

t

ilimit

1



Slide 15

IS-limiter™

i

t

ilimit

2

1

di

dt( ) 2

ilimit ^ (di/dt)

^ = logical „and“

2 Short-circuit current - Is-limiter tripped -



Slide 16

IS-limiter™

3

i

t

ilimit

2

1

di

dt

di

dt( ) 3( ) 2

4

3 Overcurrent- Is-limiter not tripped -

ilimit ^ (di/dt)

^ = logical „and“

2 Short-circuit current - Is-limiter tripped -


4 Peak value of service current

Reliability

IS-limiter™

Slide 17

Self monitoring

Redundancy – Separate independent system for each phase

Protection against EMI

– EMC tested according to IEC 61000

– Special current transformers –Low impedance shield between primary and secondary winding

– Filters for incoming / outgoing wires

– Special tripping and measuring wires –Each pair tightly twisted and protected by steel conduit

Test equipment – Quick, complete and easy test by user

IS-limiter as protection device at highest level

Application: IS-limiter mounted in bus section

IS-limiter™

Slide 18

Improving “power quality“ by gaining higher voltage stability

Higher availability of the system and processes

Increased reliability of power supply

Optimizing load flow

Reduction of energy released in case of a fault

No need to change existing busbar system and cabling

Advantages10 kV

32 MVA8%

6 kV/ 31.5 kA

25 MVA8%

6 kV/40 kA

Application: IS-limiter in generator feeder

IS-limiter™

Slide 19

Generator can be connected independent of the short-circuit capability of the system

Higher availability of existing or new system

System extension without replacing existing electrical equipment such as circuit-breaker, busbar or cable system

Advantages

10 kV/40 kA

31.5 MVA12%

40 MVA8%

10 kV

Application: IS-limiter in parallel to reactor

IS-limiter™

Slide 20

Eco- and cost-efficient due to reduction of ohmic losses of the reactor

Increased power quality due to avoidance of voltage drop through reactor

Ensuring continuous power supply through reactor in case of Is-limiter tripping

Advantages 10 kV

50 MVA10%

3000 A8%

10 kV/25 kA

Application: Connection of a generator to a Network with current-direction comparison

IS-limiter™

Slide 21

Advantages

𝐈𝐤" = 16 kA

1

1

TrippingIs-limiter

No TrippingIs-limiter

𝐈𝐤" = 15 kA

𝐈𝐤" = 25 kA

𝐈𝐤" = 3 kA

10 kV3∼50 Hz

2

2 1

2

G∼

2 1

Connect private / industrial generator feeder to the fully loaded grid

No conflict to Grid Code

Selective tripping of the IS-limiter(Tripping only at faults within grid section , not at faults within grid sections )

1

2

1

Application: IS-limiter with summation of currents

IS-limiter™

Slide 22

Advantages

Only Is-limiter(s) close to fault location trip

Limitation of short-circuit affected area due to isolation of fault

Nearly no voltage dip in large healthy area in case of short-circuit fault

Higher availability of system and processes

T1 T2 T3

A B C

IT1 IT2 IT3

I1 I2

IS-1 IS-2

ISum1 = I1 + IT1 ISum2 = I1 + IT2 + I2 ISum3 = I2 + IT3

Technical data

IS-limiter™

Slide 23

Rated voltage Rated current Switching capability

0.75 kV … 5000 A … 140 kARMS

12.00 kV … 4000 A … 210 kARMS

17.50 kV … 4000 A … 210 kARMS

24.00 kV … 3000 A … 140 kARMS

36.00 kV … 2500 A … 140 kARMS

40.50 kV … 2500 A … 140 kARMS

For higher rated currents IS-limiter can be connected in parallel

IS-limiter™

Slide 24

Individual solution

Individual solution – From loose components to fully type tested panels

Project related detailed engineering according to customer’s application

Measuring of current rise di/dt – Optimized tripping value based on instantaneous current plus current rise measuring

Selective tripping in predefined areas of the network avoiding of unnecessary downtime and repair cost

Individual solution


IS-limiter™

Slide 25

Equipment and process protection

Safe protection of…

– Electrical installations and equipment

– Critical applications such as data center, chemical industry or refineries

– Processes and systems

– Auxiliary supply in power plants

… by immediate separation from the fault affected network

Leading to…

Minimization of damage by reducing short-circuit currentenergy and respectively limiting stress on network components

Improving “power quality” by reducing voltage dip

Individual solution

Equipment and

processprotection


IS-limiter™

Slide 26

Cost and eco-efficient solution

Protection of customer’s investment

System extension without replacing existing electrical equipment such as circuit-breaker, busbar, cable system …

Cost- and eco-efficient due to minimization of electrical losses and refurbishment of tripped inserts

Cost-efficient due to minimized down time

Cogeneration – Integration of distributed power generation to fully loaded system

Downsizing of the system by using lower rated equipment

Individual solution

Costand

eco-efficientsolution Equipment

andprocess

protection


IS-limiter™

Slide 27

Summary

ABB’s solution for complex applications engineered according to customer’s project specification

– Solves short-circuit current problems in electrical networks before peak short-circuit current is reached

– The world’s fastest limiting switching device

Costand

eco-efficientsolution

Equipment and

processprotection

How can we support you?

Individual solution

abb ag - epds s-limiter the worldʼs fastest limiting and ... · the world’s fastest limiting and...

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